Home / 13,965.53-20,953.15-12,974.09

Finding the Fourth Proportional to 13,965.53, 20,953.15 and 12,974.09

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Solution

The fourth proportional to 13,965.53, 20,953.15 and 12,974.09 is: 19,465.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.53 : 20,953.15 = 12,974.09 : x
  2. Step 2: Convert to fraction form
    13,965.53/20,953.15 = 12,974.09/x
  3. Step 3: Cross multiply
    13,965.53x = 20,953.15 × 12,974.09
  4. Step 4: Simplify right side
    13,965.53x = 271,847,916.68
  5. Step 5: Solve for x
    x = 271,847,916.68/13,965.53
  6. Step 6: Final answer
    x = 19,465.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.